Straight measuring surface for outside measurements, rounded nibs for inside or hole measurements
Knurled clamp screw with left hand thread for 1 hand operation
Compact, pocket size
Knurled thumb pieces activate the slide
Slide stop prevents disassembly of tool
For quick and accurate outside and inside measurements
Meets or exceeds accuracy and performance requirements of national and international standards and are traceable to the National Institute of Standards and Technology.